一、各种病害的危害各种病害对兰花慢染的部位是不同的,表现的病态特征也不同,在危害程度上更有明显的区别。有的是致死病害,并能反复侵染;有的则常年传染或暴发流行,短期内造成大批死亡。右表介绍各类病害症状及危害程度。 First, the hazards of various diseases A variety of diseases orchid stained parts of the site is different, the performance of the pathological characteristics are also different, more significant differences in the degree of harm. Some are lethal diseases and can be repeatedly infected; others are perennial infectious or outbreak epidemic, resulting in a large number of deaths in the short term. The right table describes the various types of disease symptoms and the degree of harm.